German Valley, Illinois Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
German Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——83°49°—
- ThursdayJun 4Overcast——86°57°+3°
- FridayJun 5Heavy Showers71%0.42″75°66°-11°
- SaturdayJun 6Heavy Showers71%0.54″80°64°+5°
- SundayJun 7Light Showers18%—80°60°0°
- MondayJun 8Drizzle29%—75°63°-5°
- TuesdayJun 9Light Drizzle23%—78°69°+3°
Ozone at AQI 500. AQI up 26 in the last 6 hours — air quality is degrading. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 500
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 60
PM × Wind × Precip
PM2.5 at 8.8 µg/m³ (AQI 49) with a 0.81 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.81
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:35 AM
- Moonset
- 1:53 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
German Valley at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: April 29 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — German Valley
SPC has placed German Valley in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.